cli-v1.11.0

Added

• Validate an EPUB against the spec (epublift check). New subcommand that
  checks one or more EPUBs and reports problems with epubcheck-compatible
  message IDs (RSC-005, OPF-053, PKG-016, …). Powered by
  epubveri — our own pure-Rust,
  JVM-free alternative to W3C epubcheck (no Java, no external process),
  consumed as the published crates.io crate. Grep-style exit code (0 valid,
  1 problems found) for CI gating; --json for tooling; --quiet to show
  only failing files; --profile dict|edupub|idx|preview for extension specs.
  Behind the opt-in validate build feature (shipped in the release binaries).
  epubveri is pre-1.0 (~98.8% message-ID recall vs epubcheck — not yet full
  parity), and check says so. See docs/validate.md.

Full Changelog: cli-v1.10.1...cli-v1.11.0